COA of Formula: C8H8N2S. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-Mercapto-5-methylbenzimidazole, is researched, Molecular C8H8N2S, CAS is 27231-36-3, about New spectrophotometric method for the determination of Hg(II) in fish samples. Author is Martiniano, Lorena Carvalho; Bezerra, Cicero Welligton Brito; Marques, Edmar Pereira; Gouveia de Sousa, Antonio; Fernandes, Ridvan Nunes; Marques, Aldalea Lopes Brandes.
A simple, rapid, sensitive, and selective spectrophotometric method was developed for the determination of mercury at trace levels using 2-mercapto-5-methylbenzimidazole (MMBI). The color product (λmax = 320 nm) is formed in aqueous 0.04 M Britton-Robinson buffer pH 8.0 instantly and its absorbance remains stable for >24 h. Mercury nitrate dihydrate (Hg(NO3)2.2H2O) was used as standard analyte. The average molar absorption coefficient is 2.71 × 104 L/mol.cm. The chelate stoichiometric composition (Hg:MMBI) is 1:1. Considerable excesses of copper, zinc, lead, and cadmium did not interfere in the assay. The method allows determination of mercury in the range of 2 × 10-6 to 4 × 10-5 mol/L with good precision and accuracy; the detection limit was 9.9 × 10-7 mol Hg/L. The method was used for anal. of fish samples and the results were compared with at. absorption spectrometry data. The relative standard deviations for the analyzed samples were 7.2-33% (n = 5), while the Errors were 1.63-11.6.
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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem